EP0411939A1 - Liquid waste separator - Google Patents

Liquid waste separator Download PDF

Info

Publication number
EP0411939A1
EP0411939A1 EP90308517A EP90308517A EP0411939A1 EP 0411939 A1 EP0411939 A1 EP 0411939A1 EP 90308517 A EP90308517 A EP 90308517A EP 90308517 A EP90308517 A EP 90308517A EP 0411939 A1 EP0411939 A1 EP 0411939A1
Authority
EP
European Patent Office
Prior art keywords
filter
drum
spin
liquid
waste
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90308517A
Other languages
German (de)
English (en)
French (fr)
Inventor
David Hadjis
Michael Giordano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dyno Drain Corp
Original Assignee
Dyno Drain Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dyno Drain Corp filed Critical Dyno Drain Corp
Publication of EP0411939A1 publication Critical patent/EP0411939A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/11—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration

Definitions

  • This invention relates to improvements in waste disposal.
  • it relates to improved equipment for the separation of liquid and solid constituents of food waste or garbage.
  • Food waste typically includes a wide variety of materials such as stalks, stems, leaves, peels, rinds and the like which are discarded in food preparation as well as solid food which is uneaten and left over portions of coffee, soup, gravy, broth and the like.
  • a garbage bag or garbage bin from a typical kitchen (especially an institutional kitchen where quantities are large and separation is not undertaken) will include a variable mixture of solids and liquids. This creates two major problems; (a) the removal, haulage and disposal of the liquid portion is difficult and costly because of it's weight and (b) liquids drained from such wastes are often unacceptable for municipal sewer systems because they contain fats and other material which contaminate and clog the system.
  • the invention disclosed in this application seeks to address these problems and provide the economic and environmental advantages of separating a large portion of the disposable liquids from the solid waste or garbage. It is the purpose of this invention to separate liquids so as to reduce the weight, and therefore the cost of hauling and disposal, of food garbage and at the same time to treat the removed liquid so that it is acceptable in municipal sewer systems and does not have to be hauled away separately or otherwise treated.
  • a liquid waste separator adapted to treat food waste or garbage and comprises a housing consisting of a frame and enclosure, a perforated spin drum mounted to spin about an axis, means to spin the spin drum, a collector drum substantially surrounding the spin drum and adapted to collect liquids passing radially through said spin drum, a filter removably insertable to rest within said spin drum and adapted to contain solid particles of waste and adapted to permit passage of liquid radially therethrough, and means to convey said liquid to sewer drains.
  • a suitable filter for the spin drum is a burlap bag of sufficient density to entrap most solids and solid particles while permitting substantial flow of liquids therethrough.
  • the efficiency of the device is improved if it includes a fine micro filter adapted to filter out smaller particles of fat or other solids which pass through the burlap bag but which are not acceptable for disposal in municipal sewer systems.
  • An additional feature of the preferred embodiment of this invention includes means by which water can be backflushed through the filter in the reverse direction to clean out fine particles and solids which are entrapped by the micro filter and return the mixture of water and fine solids to the filter bag.
  • the mess and weight of the liquid component of food waste and garbage is eliminated and need not be hauled away for disposal.
  • the separated liquid is treated so that it is acceptable for disposal through municipal sewer systems.
  • the embodiment of the invention illustrated in the drawings comprises a steel frame 2 enclosed by a stainless steel enclosure 4, having a circular opening 6 of about fourteen inches in diameter in the top. Ideally, this opening is provided with a hinged cover 8 with a central opening 9 and a lid 11.
  • a stationary collector drum 10 Mounted within the enclosure is a stationary collector drum 10.
  • a circular (or otherwise symmetrical) perforated spin drum 12 which is mounted to spin on a vertical axle 14 which is concentric with the axis of the spin drum.
  • the axle 14 is mounted beneath to support the spin drum and extends downward to a gear reducer 16 which is driven by a 1 ⁇ 4 horse power, 115 volt, single phase motor designed to operate at approximately 1,700 to 1,800 rpm.
  • the gear reducer 16 has a reduction ratio of approximately 20:1 so that the speed of the drum in operation is approximately 100 rpm.
  • the perforations in the spin drum are large enough to permit easy passage of liquid waste but small enough to contain solid particles and small enough to provide a rigid support for a filter.
  • a flexible, disposable, burlap filter bag 20 which can be inserted into the spin drum and will form a liner against substantially the entire interior surface of the spin drum.
  • the burlap filter bag has a vertical surrounding wall and bottom with an open top into which material may be dumped.
  • the burlap should be so woven as to provide a filtered passage for liquid material but a barrier to particles and larger pieces of solid waste, grease and the like.
  • the bag may also be provided with a drawstring at the top so that the top may be gathered and tied to enclose it after use. It may also be provided with a hoop to hold the top opening in position in the drum.
  • Figure 3 illustrates additional machinery of the preferred embodiment including the frame 2, the enclosure 4 and the motor 18 which drives the spin drum through the reduction gear 16.
  • Reference numeral 30 refers to 1 ⁇ 4 a horsepower, 15 volt, single phase, 1,725 rpm pump and 32 represents a backwash filter, which will be described in greater detail later.
  • FIG 4 illustrates schematically the plumbing which provides for the handling of the water which is removed from the waste by means of the spin drum and filter bag
  • This liquid is caught by the collector drum and passes through the outlet in the lower end thereof at 40 (also shown in Figure 1) and is conducted by a 3/4 inch line to an electrically operated three way ball valve 42, (as illustrated in Figure 4), from which it passes into a circulating pump 44 and is conducted to the inlet end 46 of the micro filter 48 which serves to remove additional fine particles of grease, fat and other solids and semi solids.
  • the filtered water then passes out through the outlet of the filter at 50 and is conducted through a 3/4 inch line to a drain 52 of the municipal sewer system.
  • the present invention provides a means by which it may be cleaned periodically and automatically.
  • drain 40 is closed and fresh water may be admitted which is conducted to the circulating pump 44 and by means of an additional three way valve 54 may be directed to the "outlet end" 50 of the filter and passed in the reverse direction through the micro filter 48 to wash out the collected solids and convey them through the end 46 to the electrically operated two way valve 56,which in this mode is activated to conduct the stream to the line 58 (also seen in Figure 1) where the water with a substantial quantity of solids and semi solids is deposited inside the filter bag of the spin drum, to be refiltered in another cycle.
  • Figure 5 illustrates schematically the electrical system which activates the spin drum circulating pump 44 and the valves 42, 54, 56 and 57.
  • the illustrated embodiment is used by positioning a disposable burlap filter bag 20 inside the spin drum 12 (while it is stationary). The unseparated food waste or garbage is then deposited inside the filter bag. When the machine is turned on, the spin drum will rotate at approximately 100 rpm causing the liquid content of the garbage to migrate radially under centrifugal force which causes it to pass through the burlap filter bag and through the perforations in the spin drum to be collected in the collector drum 10. Additional mixed garbage may be added to the filter bag and processed by spinning until the filter bag is full or unable to handle any more.
  • the filter bag When the filter bag is "full" the bag with the semi dry and substantially lighter garbage may be removed and tied at the top and deposited in a bin or garbage truck for haulage to a waste disposal site or for use as fodder.
  • the burlap bag serves not only as a filter to separate liquid and solid waste but also as a degradable garbage bag which permits the handling of the separated solid garbage.
  • a new filter bag can be inserted to handle the next batch of untreated garbage.
  • the separation of the liquid from the solid is only part of the problem. It is also necessary to insure that the liquid removed is suitable and acceptable for disposal in the municipal sewage system so that it does not have to be hauled away as well.
  • the illustrated embodiment provides the machinery illustrated schematically in Figure 4.
  • the collector drum receives the filtered liquid which then passes out through the drain 40 (see also Figure 4) at the lower end and is conducted to the three way valve 42 and thence through the circulating pump 44, the three way valve 54 and through the micro filter 48 where unacceptable solid particles and particles of grease or oil are removed by the filter which is finer than the burlap liner of the spin drum.
  • the filtered water may then be transmitted to the drain of the municipal sewer system.
  • the separator is capable of automatically cleaning the micro filter by the admission of fresh water from the municipal supply through the three way valve 42 and through the micro filter 48 in the reverse direction to carry the "back flush" water with the particles of fat and solids removed from the filter entrained therein, through the two way valve 56 to return it to the burlap filter in the spin drum.
  • a filter bag 20 is inserted in the spin drum 12 and is then loaded with garbage which comprises a mixture of solids and liquids.
  • garbage which comprises a mixture of solids and liquids.
  • the drum 12 will spin causing liquid to pass through the filter and the drum to the collector drum 10.
  • fresh water is sprayed into the collector drum through the line 60.
  • a detection switch will turn on the circulating pump 44 which will begin to feed the separated liquid (and wash water) through the filter 48.
  • a second switch is provided in the collector drum so that if the water level reaches a level of approximately five inches the spray will shut off and the circulating pump will gradually lower the water level. If the water level drops below two or three inches the pump is automatically shut off.
  • micro filter employed will depend on the nature of the material treated and the requirements of the municipal sewer system which handles the liquid waste. However, experience has shown that a micro filter composed of an inner layer of stainless steel with 20 micron mesh sandwiched between layers of stainless steel having 1/8 inch perforated holes will do a satisfactory job. Such a micro filter is illustrated in Figure 6.
  • the present invention typified by the embodiment described above provides a means by which a liquid portion of food waste and garbage may be removed so as to eliminate the mess, weight and cost of transporting and disposing of a substantial portion of institutional garbage.
  • the removed liquids are rendered acceptable for the municipal sewer system by means of a secondary filtering system which is finer than the burlap filter bag.
  • the present invention provides a means by which the separated solid garbage may be easily handled by using the burlap filter as a garbage bag and the secondary micro filter may be constantly and automatically cleaned so that it is usable over and over again to treat water from the collector drum.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Centrifugal Separators (AREA)
  • Filtration Of Liquid (AREA)
  • Sink And Installation For Waste Water (AREA)
EP90308517A 1989-08-04 1990-08-02 Liquid waste separator Withdrawn EP0411939A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA000607635A CA1329557C (en) 1989-08-04 1989-08-04 Liquid waste separator
CA607635 1989-08-04

Publications (1)

Publication Number Publication Date
EP0411939A1 true EP0411939A1 (en) 1991-02-06

Family

ID=4140415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90308517A Withdrawn EP0411939A1 (en) 1989-08-04 1990-08-02 Liquid waste separator

Country Status (7)

Country Link
US (1) US5176825A (ja)
EP (1) EP0411939A1 (ja)
JP (1) JPH03151068A (ja)
AU (1) AU6006990A (ja)
CA (1) CA1329557C (ja)
FI (1) FI903870A0 (ja)
NO (1) NO903416L (ja)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993007539A1 (en) * 1991-10-09 1993-04-15 Dantex Graphics Limited Processing waste washout liquid containing photopolymer from printing plate manufacture
AU772826B2 (en) * 1999-12-13 2004-05-06 Trevor R Dorman Removable stormwater drain filter system
CN104759127B (zh) * 2015-03-10 2016-08-24 台州学院 泔水固液分离装置及泔水处理系统
CN107551639A (zh) * 2017-10-17 2018-01-09 湖州壤之沃生物技术有限公司 一种用于生物垃圾回收的固液分离装置
CN106140794B (zh) * 2016-08-19 2018-12-21 霍普科技（天津）股份有限公司 一种固体餐厨垃圾的处理装置
CN109534650A (zh) * 2018-12-28 2019-03-29 南京工业大学 一种固液分离装置及其使用方法
CN109828093A (zh) * 2019-03-28 2019-05-31 安徽中标环境科技有限公司 一种农村黑臭水河在线监测基站
CN111514609A (zh) * 2020-05-12 2020-08-11 吴健 一种离心设备用萃取装置

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5490453A (en) * 1995-01-09 1996-02-13 Sas Tv Products, Inc. Centrifugal fat extraction apparatus
US5674395A (en) * 1995-06-05 1997-10-07 Millipore Corporation Multiple sample separator
WO1999008796A1 (fr) * 1997-08-17 1999-02-25 Yuugengaisya Atorasu Dispositif d'evacuation des ordures menageres
US6662955B1 (en) * 1998-08-11 2003-12-16 Food Equipment Technologies Company Inc. Beverage ingredient filter and assembly
US6135374A (en) * 1999-10-08 2000-10-24 Mursen Environmental, Inc. Food by-product processing apparatus
US20030070980A1 (en) * 2001-10-11 2003-04-17 Ray Michael Dean Biodegradable disposable bag for cement waste
US7501061B2 (en) * 2002-10-23 2009-03-10 Siemens Water Technologies Holding Corp. Production of water for injection using reverse osmosis
US7175771B2 (en) * 2003-12-19 2007-02-13 Honeywell International, Inc. Multi-stage centrifugal debris trap
US20050173321A1 (en) * 2004-02-10 2005-08-11 Jeff Cady Pool filter
US7866259B2 (en) * 2006-01-18 2011-01-11 Innovative Products For Life Inc. Centrifugal food degreaser
WO2007140445A2 (en) * 2006-05-31 2007-12-06 Filtration Dynamics, Inc. Centrifugal fluid filtration devices, systems and methods
US20080271239A1 (en) * 2006-11-20 2008-11-06 Qian Wang Multi-function sink with centrifugal food dryer and drain
US20080220513A1 (en) * 2006-11-27 2008-09-11 Bucci Paul A Device and method for collecting of organic waste
US20080124791A1 (en) * 2006-11-27 2008-05-29 Bucci Paul A Device and method for collecting of organic waste
JP4502399B2 (ja) * 2007-08-10 2010-07-14 株式会社松本機械製作所 遠心分離機
US8221813B2 (en) * 2008-04-17 2012-07-17 John Leonard Boul Single-serve permeable beverage filter and method of using same
WO2011002167A2 (ko) * 2009-07-03 2011-01-06 Park No Hyeong 음식물 쓰레기 처리장치
US8100352B2 (en) * 2009-12-21 2012-01-24 Whirlpool Corporation Under-sink waste processing appliance
US9499963B2 (en) 2009-12-21 2016-11-22 Whirlpool Corporation Under-sink waste processing appliance
JP2013119675A (ja) * 2011-12-07 2013-06-17 Nippon Electric Glass Co Ltd ガラスチョップドストランドマットの製造に使用する結合剤の処理方法、結合剤の再生方法、及びガラスチョップドストランドマットの製造装置
US20140076172A1 (en) * 2012-09-19 2014-03-20 Cynthia Bowman Mechanical coffee brewer formed from recycled coffee bean bag fibers
GR20140100278A (el) * 2014-05-15 2016-02-01 Σπυριδων Αλεξανδρου Μπιτζιος Συσκευη υγιεινου ψησιματος και τηγανισματος διαφορων προϊοντων (πατατες, κ.λ.π.) με χρηση ελαχιστης ποσοτητας λαδιου
US10072404B2 (en) * 2015-05-13 2018-09-11 Aaron R. Geibel Solid food waste material collection device
US9694362B2 (en) 2015-06-18 2017-07-04 David Paul Lang Composting garbage disposal
EP3605232B1 (en) * 2017-03-31 2021-05-05 FUJIFILM Corporation Treatment method and treatment device
CN107540155B (zh) * 2017-08-09 2020-04-07 温州续影贸易有限公司 一种厨房生活污水处理装置
CN107570329B (zh) * 2017-09-30 2019-06-28 天津普洛仙科技有限公司 一种环保型中药药渣脱水处理装置
CN109351046B (zh) * 2018-12-11 2021-12-21 安徽天健环保股份有限公司 一种餐厨垃圾疏松式分离设备
CN110129135A (zh) * 2019-05-30 2019-08-16 长沙埃比林环保科技有限公司 一种餐厨垃圾过滤装置
CN113305137B (zh) * 2021-07-29 2021-10-08 江苏皇家现代家具有限公司 一种厨房垃圾干湿分离处理装置
CN114085709B (zh) * 2021-12-29 2023-09-22 东北农业大学 一种动物油脂分级装置及方法
CN115920503A (zh) * 2023-03-13 2023-04-07 济南市莱芜百味食品有限公司 一种从口蘑中提取浓缩液的装置及方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4280913A (en) * 1980-01-23 1981-07-28 Envirex, Inc. Water purification process
NL8201485A (nl) * 1982-04-07 1983-11-01 Leonardus Gerardus Vandebeek E Vuilwaterfiltreerinrichting.
US4523993A (en) * 1983-06-27 1985-06-18 Resource Associates International Corp. Precious metal recovery apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US623955A (en) * 1899-04-25 And benjamin t
US1471614A (en) * 1921-04-27 1923-10-23 Duke Emery E La Liquid clarifier
US2212831A (en) * 1938-04-25 1940-08-27 Byk Guldenwerke Chem Fab A G Manufacture of stable derivative of adrenaline
US2400879A (en) * 1942-11-16 1946-05-28 Russell M Carson Tableware scrapping and salvaging machine
US3874006A (en) * 1974-03-04 1975-04-01 Ann Lance Ritter Organic compost collector for sink drain system
AU575625B2 (en) * 1984-03-20 1988-08-04 Blanc G.M.B.H. & Co. Built in sink with rubbish container
US4767395A (en) * 1987-12-24 1988-08-30 Mellert Richard G Centrifugal grease remover/absorber for foods

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4280913A (en) * 1980-01-23 1981-07-28 Envirex, Inc. Water purification process
NL8201485A (nl) * 1982-04-07 1983-11-01 Leonardus Gerardus Vandebeek E Vuilwaterfiltreerinrichting.
US4523993A (en) * 1983-06-27 1985-06-18 Resource Associates International Corp. Precious metal recovery apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 10, no. 194 (C-358)[2250], 8th July 1986; & JP-A-61 38 647 (MATSUSHITA ELECTRIC IND. CO., LTD) 24-02-1986 *
PATENT ABSTRACTS OF JAPAN, vol. 9, no. 211 (C-300)[1934], 29th August 1985; & JP-A-60 78 656 (RAIZAA K.K.) 04-05-1985 *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5505863A (en) * 1991-10-09 1996-04-09 Dantex Graphics Limited Processing waste washout liquid containing photopolymer from printing plate manufacture
WO1993007539A1 (en) * 1991-10-09 1993-04-15 Dantex Graphics Limited Processing waste washout liquid containing photopolymer from printing plate manufacture
AU772826B2 (en) * 1999-12-13 2004-05-06 Trevor R Dorman Removable stormwater drain filter system
CN104759127B (zh) * 2015-03-10 2016-08-24 台州学院 泔水固液分离装置及泔水处理系统
CN106140794B (zh) * 2016-08-19 2018-12-21 霍普科技（天津）股份有限公司 一种固体餐厨垃圾的处理装置
CN107551639B (zh) * 2017-10-17 2019-12-20 徐州合众电力设备有限公司 一种用于生物垃圾回收的固液分离装置
CN107551639A (zh) * 2017-10-17 2018-01-09 湖州壤之沃生物技术有限公司 一种用于生物垃圾回收的固液分离装置
CN109534650A (zh) * 2018-12-28 2019-03-29 南京工业大学 一种固液分离装置及其使用方法
CN109534650B (zh) * 2018-12-28 2020-10-09 南京工业大学 一种固液分离装置及其使用方法
CN109828093A (zh) * 2019-03-28 2019-05-31 安徽中标环境科技有限公司 一种农村黑臭水河在线监测基站
CN109828093B (zh) * 2019-03-28 2023-09-08 安徽中标环境科技有限公司 一种农村黑臭水河在线监测基站
CN111514609A (zh) * 2020-05-12 2020-08-11 吴健 一种离心设备用萃取装置
CN111514609B (zh) * 2020-05-12 2020-11-10 吴健 一种离心设备用萃取装置

Also Published As

Publication number Publication date
FI903870A0 (fi) 1990-08-03
US5176825A (en) 1993-01-05
NO903416L (no) 1991-02-05
AU6006990A (en) 1991-02-07
NO903416D0 (no) 1990-08-03
JPH03151068A (ja) 1991-06-27
CA1329557C (en) 1994-05-17

Similar Documents

Publication Publication Date Title
US5176825A (en) System for treating food waste by centrifugal spin drum and bag filter
US5225085A (en) Apparatus and process for the separation and reclamation of selected components in grease trap waste
US5360555A (en) Solids handling in an oil/grease separator
JP3634374B2 (ja) 有機物質で汚染された無機物質粒子を含む懸濁液から無機物質粒子を分離するための装置
CN109944286A (zh) 一种环保清污系统
US5534162A (en) Method for disposal of biological waste
JPH02198686A (ja) 流体流から異物を分離し除去する装置及び方法
CA1331349C (en) Apparatus and process to separate and remove extraneous matter from a liquid stream
US5641360A (en) Process and device for improving the treatment of sewage solids
US5254267A (en) Grease separating method and separator system
US2473007A (en) Dish cleaning and garbage collecting machine
US3317047A (en) Sewage disposal system
KR101847093B1 (ko) 싱크대용 음식물찌꺼기 처리장치
JP4147206B2 (ja) 遠心分離装置
US4832854A (en) Apparatus and process to separate and remove extraneous matter from a liquid stream
JP3145291B2 (ja) 油分離回収装置
JP2004001161A (ja) 液体処理装置
KR200405262Y1 (ko) 음식물 쓰레기 처리장치
JP3497074B2 (ja) 有機廃棄物処理装置
SE504046C2 (sv) Avvattningsanordning
JPH09225215A (ja) 汚物清掃機
JP6779448B1 (ja) 生ゴミ処理システム
JPH0494782A (ja) 厨芥処理装置
JP2750139B2 (ja) 雑排水の浄化装置
JP2952384B2 (ja) 調理場生ごみの処理装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19910805

17Q First examination report despatched

Effective date: 19911121

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19940524